‘Anime-style survival adventure game’ Castaway Diary: Portal to the Unknown Isles announced for PC
From RemiLore: Lost Girl in the Lands of Lore developer REMIMORY.
REMIMORY, the Seoul-based studio behind RemiLore: Lost Girl in the Lands of Lore, has announced Castaway Diary: Portal to the Unknown Isles, an “anime-style survival adventure game.” It will launch in Early Access for PC via Steam in 2026.
“We are thrilled to debut a new [intellectual property] that blends the engaging mechanics of a survival game with the bright, heartwarming aesthetics of anime culture,” said REMIMORY in a press release. “With our Steam page now live, we look forward to actively engaging with our community. We invite players to wishlist the game and join us on this journey.”
Here is an overview of the game, via its Steam page:
About
Stranded on a mysterious, unknown island, a young girl must learn to navigate an unfamiliar world. But life here is far from dark or gloomy! Fueled by positivity and bright spirits, these girls refuse to give up, always looking forward to a better tomorrow.
Whether you choose to enjoy the island’s freedom solo or team up with others to overcome challenges, a heartwarming and vibrant adventure awaits. Hold onto the hope of returning home and begin your journey today!
Key Features
- A World of Activities – From gathering and fishing to cooking and tailoring—use the island’s natural resources to craft essentials and enjoy a bountiful lifestyle. With a reliable mount by your side, you can roam every corner of the vast island with ease.
- Uncharted Islands and Dungeons – Discover new lands and venture into mysterious dungeons hidden across the archipelago. Experience the thrill of the hunt as you take on a variety of adorable monsters.
- Build Your Dream Home – Go beyond simple survival and create a space that is uniquely yours. Decorate your home inside and out, tend to a flourishing farm, and fully embrace the peaceful rhythm of island life.
- Customize Your Style – Craft a wide array of stunning and vibrant costumes. While the girls are already charming, your personal touch and fashion sense will make your character truly shine.
- More Fun Together in Multiplayer – A quiet solo getaway is wonderful, but the joy is doubled when shared with friends! Build houses together, conquer challenging dungeons, and create unforgettable memories as a team.
Start your very own special island adventure with the girls right now!
Watch the announcement trailer below. View the first screenshots at the gallery.














